ASTROSAT CZTI

Data Quality Report

Orbit 20210522_A10_053T20_9000004398_level2

Creation date: 2021-05-24T14:56:01.721338
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_053T20_9000004398cztM0_level2_bc.evt modeM0/AS1A10_053T20_9000004398cztM0_level2_quad_clean.evt
Size (bytes)1,099,854,720332,202,240
Size1.0 GB 316.8 MB
Events in quadrant A4,989,1282,172,800
Events in quadrant B12,324,5022,141,910
Events in quadrant C5,728,6132,072,703
Events in quadrant D8,601,7951,996,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0501750
B0749320
C0540000
D0639800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04980
B04980
C04980
D04980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243922420.992129%
B243926322.591013%
C243929523.902919%
D2439214575.973270%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 25822 24394 0 0 0.00% 0.00%
B 25822 24396 25 25 0.10% 0.10%
C 25822 24392 9 9 0.03% 0.04%
D 25822 24392 157 157 0.61% 0.64%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 192 70564 248.82 1273 1250 278.6
A 13 254 42835 149.28 1273 1250 278.6
A 0 226 7939 24.01 1273 1250 278.6
B 6 159 6812935 27832.1 1261 1229 244.7
B 6 36 377975 1539.35 1261 1229 244.7
B 4 171 152779 619.22 1261 1229 244.7
C 10 22 499641 1762.55 1192 1186 282.8
C 0 10 242384 852.88 1192 1186 282.8
C 3 233 189512 665.93 1192 1186 282.8
D 7 238 1251739 4439.4 1220 1180 281.7
D 1 52 1094571 3881.46 1220 1180 281.7
D 8 195 640603 2269.91 1220 1180 281.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter